When you see someone, whether you know them or not, you have to make a quick decision: Should you give them a hug ? A handshake? Maybe just a wave? Some awkward half-lean that lands somewhere in between? You’ve got maybe four seconds to decide—and if you and the other person arrive at different conclusions, things might get weird. There’s a reason greetings feel harder than they used to. “People work remotely more and have less opportunities to practice the skills of interacting and having